Canon strictly manages chemical substances in products as well as those used in manufacturing processes. Our basic approach to management involves confirming products do not contain regulated chemical substances that exceed the prescribed standard and production sites do not discharge regulated chemical substances that exceed the prescribed standard.
We established in-house standards for managing chemical substances in products in line with the most stringent regulations in the world.
Canon has built a Group-wide environmental assurance system for managing chemical substances in products. Taking the laws and major environmental-labeling requirements around the world into consideration, we established in-house standards in line with the most stringent regulations in the world. Specifically, our management system classifies chemical substances into three categories: “prohibited substances,” which cannot be used in products; “use-restricted substances,” for which we are working to find alternatives by specific deadlines; and, “controlled substances,” the amount of which should be monitored.
To manage chemical substances appropriately, it is important to share information on the chemical substances contained in materials, parts, and products accurately and efficiently along the supply chain from upstream to downstream, and to ensure compliance with all applicable regulations.
In the past, companies each employed their own survey formats to request the suppliers for the information about chemical substances in products, which meant that suppliers were requested to respond to their customers multiple times in different formats even with regard to the same parts or chemicals. This situation incurred substantial burden on and costs to the entire supply chain. Furthermore, using such a variety of survey formats gave rise to concerns about the decreased reliability of data as it was communicated across the supply chain.
Amid such circumstances, the Ministry of Economy, Trade and Industry (Japan) decided to sponsor chemSHERPA (chemical information SHaring and Exchange under Reporting PArtnership in supply chain) as a common platform for sharing information, facilitating the seamless transmission of information between companies to confirm compliance with regulations on chemical substances in products.
Applying the IEC62474* international standard, the chemSHERPA data scheme enables the management of compliance verifications for chemical substance regulations for each material and part. It enables more effective verifications as well, since revisions to regulations are updated in a timely manner.
Having previously collected and managed information on chemical substances contained in products in line with IEC62474, Canon completed the introduction of chemSHERPA in 2017. Since its introduction by Canon, more than 99% of survey replies have been made through chemSHERPA. This has led to increased workplace efficiency. Some suppliers have also adopted pre-filled survey replies that contain some of the required information. This shift to a more standardized approach contributes further to operational efficiency.
Meanwhile, for suppliers who have difficulty with the reply process, guide manuals in Japanese, English and Chinese have been prepared to promote the progressive global adoption of chemSHERPA.
* Material Declaration for Products of and for the Electrotechnical Industry. International standards issued by the IEC (International Electrotechnical Commission) in March 2012 aiming to streamline the material declarations on chemical substances and compositions contained in the products of the electrotechnical industry in the global supply chain.
The International Electrotechnical Commission (IEC) is a body that carries out international standardization in all electrical, electronic and related technologies. As a member of the Technology Committee (TC111) that formulates its environment-related standards, Canon contributes in particular to the formulation of standards for information sharing on chemical substances contained in products. In this way, we work in partnership with specialists worldwide to upgrade the sharing of supply chain information.
Canon separates the chemical substances, regulated in terms of safety such as negative impact on human health, the environment, and flammable risk, into three categories. In turn, effective measures are in place for each category.
The chemical substances handled during manufacturing at Canon include “controlled chemical substances” regulated in terms of safety such as negative impact on human health, the environment, and flammable risk. Canon separates these substances into three categories: A) Prohibited substances; B) Emission reduction substances; and C) Regulated substances. In turn, effective measures are in place for each category.
Prohibited substances are defined as those specified by the Chemical Weapons Convention, the Stockholm Convention, the Montreal Protocol and the Convention concerning Safety in the Use of Asbestos, as well as specified greenhouse gases (PFC/HFC/SF6), other soil and groundwater pollutants, and substances that significantly impact people’s health.
Greenhouse gases other than PFC/HFC/SF6, greenhouse gases identified by the IPCC as having global warming potential (GWP), volatile organic compounds (VOCs), and other substances specified by Canon are designated as emission reduction substances.
Regulated substances are chemical substances with defined compliance requirements, including compliance with reference values and the ascertainment of usage and storage quantities.
Canon engages in various initiatives at its operational sites to reduce emissions of controlled chemical substances, including reducing consumption and re-using them through improvement of production processes. In 2022, Canon Prachinburi (Thailand) and Canon Hi-Tech (Thailand) introduced replacements for controlled chemical substances while Canon Inc., Taiwan carried out process improvements and installed chemical substance removal equipment. These continuous reduction activities resulted in a year-on-year decrease of approximately 3% in controlled chemical substance emissions to 413 tons.
Canon alleviates the environmental impact of its operational sites by reducing emissions of NOx*1 and SOx*2, which are major causes of air pollution and acid rain; reducing discharge of phosphates and nitrogen compounds, which cause the eutrophication of water environments; and, reducing BOD*3 and SS*4, which indicate an environmental impact in water areas. One example of this is Canon Components, the first member of the Group to introduce a new treatment process to reuse the active carbon contained in waste sludge. By removing the small residue of ink in treated wastewater, this process realizes reduced environmental impact.
To prevent air pollution, when installing or updating equipment that uses fuel, we opt for fuels that minimize generation of air pollutants (such as sulfur oxide, nitrogen oxide and soot), and have banned the use of heavy oil in principle.
Furthermore, we have designated ozone-depleting substances and persistent organic pollutants cited in the Stockholm Convention on Persistent Organic Pollutants as banned substances.
With regard to wastewater, each operational site sets standard values based on local laws and regulations. Also, control values are set at 80% of the site. We regularly check the status of compliance with management standards.
Some 30% of the semiconductor treatment process consists of cleaning the wafer (semiconductor element material) with various chemical substances. These substances are replaced at regular intervals regardless of how long the equipment has been in operation for. The semiconductor device manufacturing facility at Canon’s Ayase Plant has developed a predictive tool that tracks the constantly changing situation on the production line together with data on production plans, maintenance, and the facility’s capacity, allowing phased operation of equipment. By setting facilities to shut off for planned periods, the plant has reduced the frequency of replacement of the chemical fluids and thereby cut down on the total amount used. A yearly saving of around 23,000 liters of chemical substances is expected.
Canon places high priority on soil and groundwater protection. In line with this, we established the Canon Group’s Basic Policy on Soil and Groundwater Pollution and implement comprehensive measures based on it. In the unlikely event that soil or groundwater pollution is found at one of our operational sites, cleanup and remedial actions are carried out in close accordance with all relevant laws.
Also, our standard when acquiring new land is to conduct a preliminary soil examination and carry out any other necessary procedures, such as soil remediation, before making the purchase. We also monitor the chemical substances used at each site, remaining fully aware of the national and regional standards where each site is located in order to implement countermeasures according to the situation at each location.
|Shimomaruko||1,2-dichloroethylene||Injection of treatment agents, water quality measurement|
|Utsunomiya parking lot 1||Fluorine and its compounds, etc.||Pumping, water quality measurement|
|Toride||Trichloroethylene, etc. Hexavalent chromium and its compounds||Pumping, water quality measurement|
|Canon Ecology Industry||Trichloroethylene, 1,1-dichloroethylene||Covering, Pumping, water quality measurement|
|Canon Components||Mercury and its compounds||Covering, water quality measurement|
*Reports are made to the authorities concerning sites where purification is in progress.
Going forward, we will continue with the above initiatives and carry out monitoring and reporting of operational sites with completed remediation in a timely manner.
In accordance with relevant laws, Canon strictly manages polychlorinated biphenyl (PCB), which damages living organisms and the environment. As of December 2022, 3 operational sites were storing PCB waste. In terms of highly concentrated PCB waste, there are 492 fluorescent ballasts in storage. In Japan, this PCB waste is processed sequentially by Japan Environmental Storage & Safety Corporation (JESCO).